|Re: [eigen] first benchmark of large and sparse matrix|
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On Tuesday 24 June 2008 16:40:48 Benoît Jacob wrote: > For sum(), things are different. Since sum() is a far less common > operation, compilation time matters less, so I'm OK with merging it back to > redux once redux is vectorized (again, sum is a starting point for that). i forgot something ! Since we reimplemented the fuzzy compares using Hilbert-Schmidt norm, which uses sum(), the compilation time of sum() suddenly matters more! Also, all well considered, it seems to me that for certain users sum() could be a very common operation. However, it might well be that merging sum back in redux does not increase compilation time significantly -- here there is no question of constructing nested xprs as with dot and Product. Cheers, Benoit
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